Skip to content

[RISCV] Add IsSignExtendingOpW to Zabha and Zalasr instructions. #162341

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Oct 7, 2025
Merged

[RISCV] Add IsSignExtendingOpW to Zabha and Zalasr instructions. #162341

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 2 additions & 2 deletions llvm/lib/Target/RISCV/RISCVInstrInfoZa.td
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -140,7 +140,7 @@ def WRS_STO : WRSInst<0b000000011101, "wrs.sto">, Sched<[]>;
// Zabha (Byte and Halfword Atomic Memory Operations)
//===----------------------------------------------------------------------===//

let Predicates = [HasStdExtZabha] in {
let Predicates = [HasStdExtZabha], IsSignExtendingOpW = 1 in {
defm AMOSWAP_B : AMO_rr_aq_rl<0b00001, 0b000, "amoswap.b">,
Sched<[WriteAtomicB, ReadAtomicBA, ReadAtomicBD]>;
defm AMOADD_B : AMO_rr_aq_rl<0b00000, 0b000, "amoadd.b">,
Expand Down Expand Up @@ -181,7 +181,7 @@ defm AMOMAXU_H : AMO_rr_aq_rl<0b11100, 0b001, "amomaxu.h">,
}

// If Zacas extension is also implemented, Zabha further provides AMOCAS.[B|H].
let Predicates = [HasStdExtZabha, HasStdExtZacas] in {
let Predicates = [HasStdExtZabha, HasStdExtZacas], IsSignExtendingOpW = 1 in {
defm AMOCAS_B : AMO_cas_aq_rl<0b00101, 0b000, "amocas.b", GPR>;
defm AMOCAS_H : AMO_cas_aq_rl<0b00101, 0b001, "amocas.h", GPR>;
}
Expand Down
2 changes: 1 addition & 1 deletion llvm/lib/Target/RISCV/RISCVInstrInfoZalasr.td
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@ multiclass SRL_r_aq_rl<bits<3> funct3, string opcodestr> {
// Instructions
//===----------------------------------------------------------------------===//

let Predicates = [HasStdExtZalasr] in {
let Predicates = [HasStdExtZalasr], IsSignExtendingOpW = 1 in {
defm LB : LAQ_r_aq_rl<0b000, "lb">;
defm LH : LAQ_r_aq_rl<0b001, "lh">;
defm LW : LAQ_r_aq_rl<0b010, "lw">;
Expand Down